A clinical Study of Complete and Partial Denture Fracture at Four Hospitals in Iraq

Abstract

Objective: To analyzes and determines the prevalence of type of denture fracture infour hospitals.Method: Data were collected from patients who attended prosthodontic clinics fordenture repairs at four hospitals. For each patient requiring of a fractured completeand partial denture, the variables were recorded: causes of denture fracture, thetype of fracture and the history of previous recurrent fractures.Results: Of 560 repaired denture 330 (59%) were complete dentures, 160 (30%) wereremovable partial denture, which were excluded from the study, and 70(10%) involved replacement of the teeth that had debonded from the denturebases. The ratio of upper to lower complete denture fractures was approximately2:1, most of the fractured dentures (65%) were those of males.Poor fit appeared to be the main cause of denture fracture 120 (20%), and poorocclusion was the second most common case recorded 50 (8%) .Midline fracturewas the most common type of fracture during the period of study 210(40%). Mostof fracture the fractured dentures 180 (32%) had previously been repaired once ormore.Conclusion: The total number of complete denture fractures was considerablyenhanced by repetitive fractures, which can be reduced by the application ofprosthetic principles in constructing and maintaining dentures particular during thelaboratory stages.Improvements in the processing techniques and the type of resin can reduce theincidence of denture fracture .Various polymers have been developed for use asdenture base resins to overcome some of the mechanical deficiencies ofpolymethylmethacrylate .